Δύο γὰρ, ἐπιστήμη τε καὶ δόξα, ὧν τὸ μὲν ἐπίστασθαι ποιέει, τὸ δὲ ἀγνοεῖν → Two different things are science and belief: the one brings knowledge, the other ignorance
client: P. πελάτης, ὁ (Plato).
servant: P. and V. ὑπηρέτης, ὁ, οἰκέτης, ὁ.
subject: use adj., P. and V. ὑπήκοος.